code: def mlp_in():
      return [
          Layer(
              weight="pos_ff.CoreNet[0].weight",
              bias="pos_ff.CoreNet[0].bias",
          )
      ]
  
file_path: parallelformers/parallelformers/policies/transfo_xl.py
imports: from transformers.models.transfo_xl.modeling_transfo_xl import RelPartialLearnableDecoderLayer
  from parallelformers.policies.base import Layer, Policy
  from parallelformers.utils.dist_utils import AllReduceLinear
label_desc: Use image node_id 4 for calling the TransfoXLPolicy obj's underlying member method code with example usage: obj.mlp_in() and returns: list